RE the following clue, Tinsay is only present on the island during Tai Bwo Wannai Trio; perhaps the instruction should be changed to "Dig in the southwest corner inside the ruins" was this is the permanent spot, regardless of the status of each individual player's progress...?
"05 degrees 50 minutes South
10 degrees 05 minutes East
(05.50 S, 10.05 E)"